A protective shed for track construction

Abstract

The present invention discloses a protective shed for track construction, and specifically relates to the technical field of track construction, comprising two symmetrically arranged support frames, each support frame having two support legs fixedly connected to the bottom, a shed cloth arranged above the support frame, and the support legs being telescopic support legs capable of adjusting height, and a universal wheel fixedly connected to the bottom of each support leg. The present invention, through the arrangement of a protective mechanism, can, on the one hand, play a buffering role when soil, garbage, etc. fall, provide soft support for the shed cloth, reduce the impact force on the shed cloth, thereby reducing the risk of the shed cloth being directly penetrated, and reduce the occurrence of accidents; on the other hand, can rotate the soil, garbage, etc. adsorbed on the top of the shed cloth to the bottom of the shed cloth, making the soil, garbage, etc. objects easier to fall, avoiding excessive accumulation of soil, garbage, etc. objects, and preventing deformation and depression above the shed cloth, thereby increasing the service life of the protective shed.

Description

Technical Field

[0001] The present invention relates to the technical field of track construction, and more particularly to a protective shed used for track construction. Background Art

[0002] In order to ensure the smooth progress and safe operation of track construction, protective sheds are usually built on viaducts, tunnel entrances, inside tunnels or any place where high-altitude operations are required to prevent accidents such as falling rocks, mud, and landslides. It can provide workers with a good construction environment, reduce the impact of the natural environment, and improve project construction efficiency.

[0003] The Chinese patent application number CN202111548268.5 discloses an intelligent protection device for rail transit construction safety, including a support crossbar, a screw rod is provided between two adjacent support crossbars, one end of the outer periphery of the screw rod is rotatably installed with a support ring, and the outer periphery of the screw rod is threadedly installed with several nuts, and the nuts and the support ring are respectively hinged to one end of the connecting rod toward the side of the corresponding support crossbar, and the other end of the connecting rod is hinged to the corresponding support crossbar. The top side of the support crossbar is connected through a shed cloth, and the bottom sides of the two lowest support crossbars are respectively fixed with several support legs, and the lower ends of the support legs are respectively fixed with rollers. The invention can adjust the size of the protective shed arch according to the size of the tunnel arch radius so that the protective shed can meet the construction of tunnels of different sizes, and it is convenient for the protective shed to move in the tunnel. Since the protective shed is foldable, it is convenient for the storage and transportation of the protective shed, which can meet market demand and is suitable for promotion.

[0004] Existing protective sheds with adjustable functions generally use flexible materials (such as cloth or plastic, etc.) as the top protective layer to facilitate adaptive adjustment. However, in places such as viaducts, tunnel entrances and tunnels, mud, garbage and snow will fall onto the top protective layer, and it is not easy to fall off. As time accumulates, on the one hand, the weight of the protective shed will increase, which will cause excessive pressure on the bracket and structure, leading to structural fatigue or damage. On the other hand, the top protective layer will be deformed, dented, etc., which will cause rainwater, stones, etc. to fail to fall normally, further increasing the weight of the protective shed, causing the protective layer to be damaged due to excessive force, affecting the service life of the protective shed. Summary of the invention

[0005] The object of the present invention is to provide a protective shed for track construction to solve the problem that the existing protective sheds with adjustable functions proposed in the above background technology generally use flexible materials (such as cloth or plastic, etc.) as the top protective layer, so as to facilitate adaptive adjustment. However, in places such as viaducts, tunnel entrances and tunnels, mud, garbage and snow will fall onto the top protective layer, and it is not easy to fall off. As time accumulates, on the one hand, the weight of the protective shed will increase, which will cause excessive pressure on the support and structure, leading to structural fatigue or damage. On the other hand, the top protective layer will be deformed, dented, etc., which will cause rainwater, stones, etc. to fail to fall normally, further increasing the weight of the protective shed, causing the protective layer to be damaged due to excessive force, affecting the service life of the protective shed.

[0006] To achieve the above object, the present invention provides the following technical solution: a protective shed for track construction, comprising two symmetrically arranged support frames, each of which has support legs fixedly connected to both ends of the bottom of the support frame, a shed cloth arranged above the support frame, and further comprising:

[0007] An adjustment mechanism, the adjustment mechanism is arranged between the two support frames and is used to adjust the distance between the two support frames;

[0008] A protection mechanism, the protection mechanism is used to drive the shed cloth to rotate by utilizing the impact force and pressure generated above the shed cloth;

[0009] The tensioning mechanism is arranged below the shed cloth and is used for synchronously tensioning and supporting the shed cloth when adjusting the distance between the two support frames.

[0010] Preferably, the adjustment mechanism includes two groups of scissor brackets arranged between the two support frames, the scissor brackets are composed of multiple groups of hinged scissor brackets, and mounting grooves are provided on the sides of the two support frames that are close to each other, and the two ends of the two groups of scissor brackets that are far away from each other are respectively rotatably connected in the two mounting grooves, and the other two ends of the two groups of scissor brackets that are far away from each other are respectively slidably connected in the two mounting grooves, and two telescopic cylinders for driving the two groups of scissor brackets to open and close are fixedly connected in one of the mounting grooves, and the output ends of the two telescopic cylinders are respectively rotatably connected to one end of the two groups of scissor brackets that are slidably connected in the mounting grooves.

[0011] Preferably, the tops of the central hinges of the two groups of scissor brackets are fixedly connected to support rods, the tops of the remaining hinges of the two groups of scissor brackets are fixedly connected to piston cylinders, each of the piston cylinders is sealed and slidably connected with a telescopic rod, a first elastic member is connected between the bottom of each telescopic rod and the corresponding piston cylinder, the two support rods and the tops of every two corresponding telescopic rods are rotatably connected with a rotating rod, and each of the rotating rods is parallel to the support frame.

[0012] Preferably, the protective mechanism includes four mounting blocks, each two of the mounting blocks are fixedly connected to the sides of the two support frames away from each other, the two mounting blocks located on the same side are respectively located at both ends of the support frame and are rotatably connected to a rotating cylinder, and the two rotating cylinders are parallel to the support frame.

[0013] Preferably, the shed cloth is sleeved on the outer wall of each rotating rod and the two rotating cylinders, and each rotating rod and the two rotating cylinders are in contact with the shed cloth, and the height of each piston cylinder is gradually reduced toward the direction of the two rotating cylinders relative to the height of the support rod, so that the shed cloth gradually tilts toward the direction of the two rotating cylinders.

[0014] Preferably, a rotation groove is opened inside the two mounting blocks located at the same end on the two support frames, and the internal rotation connection of the rotation groove is an inner ratchet, and a plurality of teeth are evenly arranged on the outer peripheral side of the inner ratchet. A pawl is hinged on the outer wall of the rotating shaft of the two rotating cylinders, and a second elastic member is connected between the two pawls and the corresponding rotating shaft of the rotating cylinder. The two second elastic members are used to support the corresponding pawls for resetting, and the two pawls are used to prevent the corresponding rotating cylinder from rotating when the inner ratchet rotates.

[0015] Preferably, two slide grooves connected to the rotating groove are symmetrically opened inside the two mounting blocks, piston plates are sealed and slidably connected in the two slide grooves, racks are fixedly connected to the tops of the two piston plates, and the two internal ratchets can engage with the corresponding racks through teeth, and the bottom of each telescopic cylinder located on the same side is connected to the bottom of the slide groove located on the same side.

[0016] Preferably, when the two racks are located at the initial positions at the bottom of the corresponding slide grooves, the two racks cannot engage with the corresponding inner ratchet wheels. When the two racks move upward, the two racks can engage with the corresponding inner ratchet wheels.

[0017] Preferably, the tensioning mechanism includes four mounting plates, and limiting grooves are provided on the sides of the two supporting legs located on the same supporting frame that are close to each other, and the four mounting plates are slidably connected in the corresponding limiting grooves. A third elastic member is connected between the bottom of each mounting plate and the corresponding limiting groove, and the tops of the two mounting plates located on the same side are rotatably connected to cleaning rollers, and the two cleaning rollers are parallel to the supporting frame. The mounting plates are arranged to be inclined upward, and the mounting plates can drive the cleaning rollers to always fit with the bottom of the shed cloth under the support of the third elastic member.

[0018] Preferably, the support legs are telescopic support legs with adjustable height, and the bottom of each support leg is fixedly connected with a universal wheel.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention controls the two telescopic cylinders to extend or shorten by setting the adjustment mechanism, driving the two sets of scissor brackets to open or close synchronously, thereby adjusting the distance between the two supporting legs. On the one hand, the protective shed can adapt to different installation environments, achieve rapid installation, and improve the flexibility of the protective shed. On the other hand, the protective shed can be folded, which can reduce the occupied space during storage and transportation, and facilitate the storage and transportation of the protective shed.

[0021] 2. The present invention, through the setting of the protective mechanism, can, on the one hand, play a buffering role when dirt, garbage, etc. fall, provide soft support for the shed cloth, reduce the impact force on the shed cloth, thereby reducing the risk of the shed cloth being directly penetrated and reducing the occurrence of accidents; on the other hand, the dirt, garbage, etc. adsorbed on the top of the shed cloth can be rotated to the bottom of the shed cloth, making it easier for the dirt, garbage, etc. to fall, avoiding excessive accumulation of dirt, garbage, etc., and preventing deformation and depression on the top of the shed cloth, thereby increasing the service life of the protective shed;

[0022] 3. The present invention provides a tensioning mechanism. On the one hand, the bottom of the shed cloth can be tensioned and softly supported at the same time, so that the tensioning force of the shed cloth can be released after being impacted, further reducing the impact force on the shed cloth and the risk of being directly punctured, and extending the service life of the shed cloth. On the other hand, the two cleaning rollers will come into contact with the dirt, garbage and other objects at the bottom of the shed cloth when rotating. The objects that have not fallen under the shed cloth can be cleaned by the rotation of the cleaning rollers, preventing the dirt, garbage and other objects that have not fallen from the shed cloth from being adsorbed on the surface of the shed cloth, avoiding increasing the weight of the protective shed, reducing the impact on the bracket and structure, and further improving the service life of the protective shed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the installation of the protection mechanism of the present invention.

[0025] Figure 3 It is a cross-sectional view of the internal structure of the protection mechanism of the present invention.

[0026] Figure 4 For the present invention Figure 3 A-section structure enlarged view.

[0027] Figure 5 It is a schematic diagram of the structure of the pawl part of the present invention.

[0028] Figure 6 It is a cross-sectional view of the internal structure of the piston cylinder of the present invention.

[0029] Figure 7 It is a schematic diagram of the installation of the adjustment mechanism structure of the present invention.

[0030] Figure 8 It is a schematic diagram of the tensioning mechanism structure of the present invention.

[0031] The accompanying drawings are marked as follows: 1. support frame; 11. support leg; 12. awning cloth; 13. universal wheel; 2. adjustment mechanism; 21. scissor bracket; 22. mounting groove; 23. telescopic cylinder; 24. support rod; 25. piston cylinder; 26. telescopic rod; 27. first elastic member; 28. rotating rod; 3. protection mechanism; 31. mounting block; 32. rotating cylinder; 33. rotating groove; 34. inner ratchet; 35. teeth; 36. pawl; 37. second elastic member; 38. slide groove; 39. piston plate; 310. rack; 4. tensioning mechanism; 41. mounting plate; 42. limit groove; 43. third elastic member; 44. cleaning roller. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0033] refer to Figure 1 A protective shed for track construction according to an embodiment of the present invention comprises two symmetrically arranged support frames 1, each of which is fixedly connected to support legs 11 at both ends of the bottom of each support frame 1, a shed cloth 12 is arranged above the support frame 1, the support legs 11 are telescopic support legs with adjustable height, and a universal wheel 13 is fixedly connected to the bottom of each support leg 11.

[0034] refer to Figure 1-Figure 7 , and also includes an adjustment mechanism 2, which is arranged between the two support frames 1 and is used to adjust the distance between the two support frames 1. The adjustment mechanism 2 includes two groups of scissor brackets 21 arranged between the two support frames 1, and the scissor brackets 21 are composed of multiple groups of hinged scissor brackets. The two support frames 1 are each provided with a mounting groove 22 on one side close to each other. The two ends of the two groups of scissor brackets 21 that are away from each other are respectively rotatably connected in the two mounting grooves 22, and the other two ends of the two groups of scissor brackets 21 that are away from each other are respectively slidably connected in the two mounting grooves 22, and one of the mounting grooves 22 is fixedly connected with two for driving the two groups of scissor brackets 21 to open A closed telescopic cylinder 23, the output ends of the two telescopic cylinders 23 are respectively rotatably connected to one end of the two groups of scissor brackets 21 slidingly connected in the installation groove 22, the tops of the central hinges of the two groups of scissor brackets 21 are fixedly connected with support rods 24, the tops of the other hinges of the two groups of scissor brackets 21 are fixedly connected with piston cylinders 25, each piston cylinder 25 is sealed and slidably connected with a telescopic rod 26, a first elastic member 27 is connected between the bottom of each telescopic rod 26 and the corresponding piston cylinder 25, the two support rods 24 and the tops of every two corresponding telescopic rods 26 are rotatably connected with a rotating rod 28, and each rotating rod 28 is parallel to the support frame 1.

[0035] refer to Figure 3-Figure 6, also includes a protective mechanism 3, the protective mechanism 3 is used to use the impact force and pressure generated above the shed cloth 12 to drive the shed cloth 12 to rotate, the protective mechanism 3 includes four mounting blocks 31, each two mounting blocks 31 are respectively fixedly connected to the side of the two support frames 1 that are away from each other, the two mounting blocks 31 located on the same side are respectively located at both ends of the support frame 1 and are rotatably connected with a rotating cylinder 32, the two rotating cylinders 32 are parallel to the support frame 1, the shed cloth 12 is sleeved on the outer wall of each rotating rod 28 and the two rotating cylinders 32, and each rotating rod 28 and the two rotating cylinders 32 are in contact with the shed cloth 12, the height of each piston cylinder 25 is gradually reduced in the direction of the two rotating cylinders 32 relative to the height of the support rod 24, so that the shed cloth 12 gradually tilts in the direction of the two rotating cylinders 32, and the two mounting blocks 31 located at the same end on the two support frames 1 are each provided with a rotating groove 33, the interior of the rotating groove 33 is rotatably connected with an inner ratchet 34, and the outer peripheral side of the inner ratchet 34 is evenly provided with a plurality of teeth 35, and the two A ratchet 36 is hinged on the outer wall of the rotating shaft of each rotating cylinder 32. A second elastic member 37 is connected between the two ratchet 36 and the rotating shaft of the corresponding rotating cylinder 32. The two second elastic members 37 are used to support the corresponding ratchet 36 to reset. The two ratchet 36 are used to prevent the corresponding rotating cylinder 32 from rotating when the inner ratchet wheel 34 rotates. Two sliding grooves 38 connected to the rotating groove 33 are symmetrically arranged inside the two mounting blocks 31. The two sliding grooves 38 are sealed and slidably connected with piston plates 39. The tops of the two piston plates 39 are fixedly connected with racks 310, and the two inner ratchets 34 can mesh with the corresponding racks 310 through teeth 35. The bottom of each telescopic cylinder 23 on the same side is connected to the bottom of the slide groove 38 on the same side. When the two racks 310 are located at the initial position at the bottom of the corresponding slide groove 38, the two racks 310 cannot mesh with the corresponding inner ratchet 34. When the two racks 310 move upward, the two racks 310 can mesh with the corresponding inner ratchet 34.

[0036] In actual use, the protective shed is moved to the position where protection is required. The height of the support legs 11 can be adjusted to adapt to the height of the installation environment. When the width of the protective shed needs to be adjusted, the two telescopic cylinders 23 can be controlled to extend or shorten, driving the two sets of scissor brackets 21 to open or close synchronously, thereby adjusting the distance between the two support legs 11 to adapt to the installation environment. After the adjustment is completed, the universal wheels 13 are locked to complete the installation of the protective shed;

[0037] During use, when objects such as mud and garbage fall on the top of the shed cloth 12, the objects will generate impact force and pressure on the top of the shed cloth 12. The impact force and pressure will cause the multiple telescopic rods 26 located on the same side at the corresponding positions to squeeze the corresponding first elastic member 27 to slide downward in the corresponding piston cylinder 25, so that the gas in the multiple piston cylinders 25 enters the corresponding slide groove 38. The gas entering the slide groove 38 will push the corresponding piston plate 39 to drive the corresponding rack 310 to move upward in the slide groove 38. When the strip 310 moves upward, it will mesh with the corresponding inner ratchet 34 and drive the inner ratchet 34 to rotate. When the inner ratchet 34 rotates, it will drive the rotating cylinder 32 to rotate through the pawl 36. When the rotating cylinder 32 rotates, it can drive the shed cloth 12 to rotate toward the side where the object falls, thereby driving the dirt, garbage and other objects adsorbed on the shed cloth 12 to move, and rotate the dirt, garbage and other objects to the bottom of the shed cloth 12, so that the dirt, garbage and other objects are easier to fall, and avoid excessive accumulation on the shed cloth 12;

[0038] It should be noted that, on the one hand, when dirt, garbage, etc. fall on the top of the shed cloth 12, the multiple telescopic rods 26 at the corresponding positions will squeeze the corresponding first elastic member 27 to slide downward in the corresponding piston cylinder 25, thereby playing a buffering role when the dirt, garbage, etc. fall, providing soft support for the shed cloth 12, reducing the impact force on the shed cloth 12, thereby reducing the risk of the shed cloth 12 being directly penetrated and reducing the occurrence of accidents;

[0039] On the other hand, when the rotating cylinder 32 on one side drives the awning cloth 12 to rotate, the rotating cylinder 32 on the other side will also rotate synchronously. At this time, when the rotating cylinder 32 on the other side rotates, it will drive the inner ratchet 34 to rotate through the pawl 36. Since the rack 310 on the other side is located at the initial position at the bottom of the corresponding slide groove 38, the rack 310 cannot engage with the corresponding inner ratchet 34. Therefore, when the rotating cylinder 32 on one side drives the awning cloth 12 to rotate, it will not affect the normal operation of the other side.

[0040] When the rotating cylinder 32 drives the shed cloth 12 to rotate objects such as mud and garbage to the bottom of the shed cloth 12, the impact force and pressure on the shed cloth 12 will disappear, and each telescopic rod 26 will return to its initial position under the rebound action of the corresponding first elastic member 27, so that the gas in the slide groove 38 is re-drawn into the corresponding piston cylinder 25. In the process of the gas being re-drawn, the piston plate 39 will drive the corresponding rack 310 to move downward and return to its initial position. In the process of the rack 310 moving downward, it will drive the inner ratchet 34 to rotate. In the process of the inner ratchet 34 rotating, the inner ratchet 34 will push the pawl 36 to compress the second elastic member 37, so that the inner ratchet 34 cannot drive the corresponding rotating cylinder 32 to rotate when it rotates, thereby preventing the mud, garbage and other objects rotated to the bottom of the shed cloth 12 from returning to the top of the shed cloth 12.

[0041] In summary, by setting the adjustment mechanism 2, by controlling the two telescopic cylinders 23 to extend or shorten, the two sets of scissor brackets 21 are driven to open or close synchronously, thereby adjusting the distance between the two supporting legs 11. On the one hand, the protective shed can adapt to different installation environments, achieve rapid installation, and improve the flexibility of the protective shed. On the other hand, the protective shed can be folded, which can reduce the occupied space during storage and transportation, and facilitate the storage and transportation of the protective shed.

[0042] By setting the protective mechanism 3, on the one hand, it can play a buffering role when mud, garbage and the like fall, provide soft support for the shed cloth 12, reduce the impact force on the shed cloth 12, thereby reducing the risk of the shed cloth 12 being directly penetrated and reducing the occurrence of accidents. On the other hand, the mud, garbage and other objects adsorbed on the top of the shed cloth 12 can be rotated to the bottom of the shed cloth 12, making it easier for mud, garbage and other objects to fall, avoiding excessive accumulation of mud, garbage and other objects, and preventing deformation and depression on the top of the shed cloth 12, thereby increasing the service life of the protective shed. Embodiment 2

[0043] In order to keep the shed cloth 12 in a tensioned state during the adjustment process and to clean up the dirt, garbage and other objects rotated under the shed cloth 12, the present embodiment improves the device described in the above embodiment.

[0044] refer to Figure 1 and Figure 8 , also includes a tensioning mechanism 4, which is arranged below the shed cloth 12 and is used for synchronously tensioning and supporting the shed cloth 12 when adjusting the distance between the two support frames 1. The tensioning mechanism 4 includes four mounting plates 41. A limiting groove 42 is provided on the side where the two support legs 11 on the same support frame 1 are close to each other. The four mounting plates 41 are slidably connected in the corresponding limiting grooves 42. A third elastic member 43 is connected between the bottom of each mounting plate 41 and the corresponding limiting groove 42. A cleaning roller 44 is rotatably connected to the top of the mounting plate 41 on the same side. The two cleaning rollers 44 are parallel to the support frame 1, and the mounting plate 41 is arranged to be tilted upward. The mounting plate 41 can drive the cleaning roller 44 to always fit with the bottom of the shed cloth 12 under the support of the third elastic member 43.

[0045] In actual use, when the width of the protective shed is adjusted, the mounting plate 41 can drive the cleaning roller 44 to always fit with the bottom of the shed cloth 12 under the support of the third elastic member 43, and tension the shed cloth 12. The tension of the shed cloth 12 can be adjusted by replacing the third elastic member 43 with different elastic forces.

[0046] It should be noted that when mud, garbage, etc. fall on the top of the shed cloth 12, the impact force and pressure will cause the upper shed cloth 12 to deform downward, while the lower shed cloth 12 will be tensioned. The tensioned shed cloth 12 will push the two cleaning rollers 44 to drive the corresponding mounting plate 41 to compress the corresponding third elastic member 43 to move downward in the limiting groove 42, playing a buffering role, providing soft support for the bottom of the shed cloth 12, so that the tension of the shed cloth 12 after the impact can be released, further reducing the impact force on the shed cloth 12 and the risk of being directly penetrated, and extending the service life of the shed cloth 12;

[0047] When the shed cloth 12 rotates the dirt, garbage and other objects to the bottom of the shed cloth 12, the shed cloth 12 will drive the two cleaning rollers 44 to rotate during the rotation. The two cleaning rollers 44 will come into contact with the dirt, garbage and other objects at the bottom of the shed cloth 12 during the rotation. The cleaning rollers 44 can rotate to clean the objects that have not fallen below the shed cloth 12, preventing the dirt, garbage and other objects that have not fallen from the shed from being adsorbed on the shed cloth 12, thereby avoiding increasing the weight of the protective shed and causing excessive pressure on the bracket and structure.

[0048] To summarize, by setting the tensioning mechanism 4, on the one hand, the bottom of the shed cloth 12 can be tensioned and softly supported at the same time, so that the tensioning force of the shed cloth 12 can be released after being impacted, further reducing the impact force on the shed cloth 12 and the risk of being directly penetrated, thereby extending the service life of the shed cloth 12. On the other hand, the two cleaning rollers 44 will come into contact with the dirt, garbage and other objects at the bottom of the shed cloth 12 when rotating. By rotating the cleaning rollers 44, the objects that have not fallen under the shed cloth 12 can be cleaned, preventing the dirt, garbage and other objects that have not fallen from the shed cloth from being adsorbed on the surface of the shed cloth 12, avoiding increasing the weight of the protective shed, reducing the impact on the bracket and structure, and further improving the service life of the protective shed.

[0049] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0050] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0051] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective shed for track construction, comprising two symmetrically arranged support frames (1), each of the support frames (1) having support legs (11) fixedly connected to both ends of the bottom, and a shed cloth (12) arranged above the support frames (1), characterized in that: Also includes: An adjustment mechanism (2), the adjustment mechanism (2) being arranged between the two support frames (1) and being used to adjust the distance between the two support frames (1); A protection mechanism (3), the protection mechanism (3) being used to utilize the impact force and pressure generated above the shed cloth (12) to drive the shed cloth (12) to rotate; A tensioning mechanism (4), the tensioning mechanism (4) being arranged below the shed cloth (12) and being used for synchronously tensioning and supporting the shed cloth (12) when adjusting the distance between the two support frames (1); The adjustment mechanism (2) comprises two groups of scissor brackets (21) arranged between the two support frames (1), the scissor brackets (21) are composed of a plurality of groups of hinged scissor brackets, and a mounting groove (22) is provided on the side of the two support frames (1) close to each other, and the two ends of the two groups of scissor brackets (21) away from each other are respectively rotatably connected in the two mounting grooves (22), and the other two ends of the two groups of scissor brackets (21) away from each other are respectively slidably connected in the two mounting grooves (22), and two telescopic cylinders (23) for driving the two groups of scissor brackets (21) to open and close are fixedly connected in one of the mounting grooves (22), and the output ends of the two telescopic cylinders (23) are respectively rotatably connected to one end of the two groups of scissor brackets (21) slidably connected in the mounting grooves (22); The tops of the central hinges of the two groups of scissor brackets (21) are fixedly connected to support rods (24), the tops of the other hinges of the two groups of scissor brackets (21) are fixedly connected to piston cylinders (25), each of the piston cylinders (25) is sealed and slidably connected to a telescopic rod (26), a first elastic member (27) is connected between the bottom of each telescopic rod (26) and the corresponding piston cylinder (25), the two support rods (24) and the tops of each two corresponding telescopic rods (26) are rotatably connected to a rotating rod (28), and each rotating rod (28) is parallel to the support frame (1); The protection mechanism (3) comprises four mounting blocks (31), each two of the mounting blocks (31) are respectively fixedly connected to one side of the two support frames (1) that are away from each other, the two mounting blocks (31) located on the same side are respectively located at two ends of the support frame (1) and are rotatably connected to a rotating cylinder (32), and the two rotating cylinders (32) are parallel to the support frame (1); The shed cloth (12) is sleeved on the outer wall of each rotating rod (28) and the two rotating cylinders (32), and each rotating rod (28) and the two rotating cylinders (32) are in contact with the shed cloth (12), and the height of each piston cylinder (25) is gradually reduced in the direction of the two rotating cylinders (32) relative to the height of the support rod (24), so that the shed cloth (12) gradually tilts in the direction of the two rotating cylinders (32); The two mounting blocks (31) on the two support frames (1) and located at the same end are each provided with a rotation groove (33) inside, an inner ratchet (34) is rotatably connected inside the rotation groove (33), a plurality of teeth (35) are evenly arranged on the outer circumference of the inner ratchet (34), a pawl (36) is hingedly connected to the outer wall of the rotating shaft of the two rotating cylinders (32), a second elastic member (37) is connected between the two pawls (36) and the rotating shaft of the corresponding rotating cylinder (32), the two second elastic members (37) are used to support the corresponding pawls (36) for resetting, and the two pawls (36) are used to prevent the corresponding rotating cylinder (32) from rotating when the inner ratchet (34) rotates; Two slide grooves (38) connected to the rotating groove (33) are symmetrically provided inside the two mounting blocks (31); piston plates (39) are sealed and slidably connected inside the two slide grooves (38); racks (310) are fixedly connected to the tops of the two piston plates (39); the two inner ratchets (34) can mesh with the corresponding racks (310) through teeth (35); and the bottom of each telescopic cylinder (23) located on the same side is connected to the bottom of the slide groove (38) located on the same side; When the two racks (310) are located at the initial position at the bottom of the corresponding slide groove (38), the two racks (310) cannot mesh with the corresponding inner ratchet (34); when the two racks (310) move upward, the two racks (310) can mesh with the corresponding inner ratchet (34); The tensioning mechanism (4) comprises four mounting plates (41), and a limiting groove (42) is provided on the side where two supporting legs (11) located on the same supporting frame (1) are close to each other. The four mounting plates (41) are slidably connected in the corresponding limiting grooves (42), and a third elastic member (43) is connected between the bottom of each mounting plate (41) and the corresponding limiting groove (42). The tops of the two mounting plates (41) located on the same side are rotatably connected to a cleaning roller (44), and the two cleaning rollers (44) are parallel to the supporting frame (1). The mounting plates (41) are arranged to be inclined upward, and the mounting plates (41) can drive the cleaning roller (44) to always fit with the bottom of the shed cloth (12) under the support of the third elastic member (43).

2. A protective shed for track construction according to claim 1, characterized in that: The support legs (11) are telescopic support legs capable of adjusting height, and a universal wheel (13) is fixedly connected to the bottom of each support leg (11).

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